粒子跟踪与电磁辐射簇射的结合：将GPT和Geant4与可视化相结合
Combining Particle Tracking with Electromagnetic Radiation Showers: Merging GPT and Geant4 with Visualization
摘要：
场发射电子会严重影响高场、高占空比电子加速器的工作。加速场致发射可导致高平均功率射束，其可辐射损坏射束线组件。此外，局部损耗产生热热点，其释气降低了光注入器和低温模块中所需的超高高真空。然而，尽管它们的重要性，场发射的影响很少包括在电子注入器的设计和工程。这项工作试图通过结合两个众所周知的和有据可查的程序，GPT和Geant 4，来跟踪电子和它们在注入器束线中的损失，来补救这种情况。本文介绍了一个模拟电子沿束线的路径和损失的程序系统。此外，跟踪结果可以使用开源3D CAD程序沿着束管包络和围绕束管包络缩放和平移。结合程序GPT-Geant 4的散射计算结果与文献结果吻合良好。本文最后与暗电流模拟的LCLS-II注入器从阴极到准直器在1.5 m从阴极。
英文摘要：
Field emitted electrons can seriously affect the operation of high-field, high-duty factor electron accelerators. Accelerated field emission can result in high average power beams which can radiation damage beamline components. In addition, localized losses generate thermal hot spots whose outgassing degrades the ultra-high vacuum required in photoinjectors and cryomodules. However, despite their importance, the effects of field emission are rarely included in the design and engineering of electron injectors. This work attempts to remedy this situation by combining two well-known and well-documented programs, GPT and Geant4, to track electrons and their losses in an injector beamline. This paper describes a system of programs which simulates electron paths and losses along the beamline. In addition, the tracking results can be zoomed and panned along and about the beampipe envelope using an open-source 3D CAD program. The scattering albedo calculations of the combined program, GPT-Geant4, are shown to be in good agreement with the literature albedos. The paper concludes with a dark current simulation for the LCLS-II injector from the cathode to the collimator at 1.5 m from the cathode.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
